将字典字符串字符串转换为json字符串[重复]

Posted 2023-02-22

【中文标题】将字典字符串字符串转换为json字符串[重复]

【英文标题】：converting dictionary string string to json string [duplicate]

【发布时间】：2014-07-06 22:12:21

【问题描述】：

如何转换我的字典

Dictionary<string,string> to JSON string 

然后再次从 JSON 字符串转换为

Dictionary<string,string> in c#?

【参考方案1】：

使用扩展方法试试这个。

public static class Extensions

    public static string FromDictionaryToJson(this Dictionary<string, string> dictionary)
    
        var kvs = dictionary.Select(kvp => string.Format("\"0\":\"1\"", kvp.Key, string.Concat(",", kvp.Value)));
        return string.Concat("", string.Join(",", kvs), "");
    

    public static Dictionary<string, string> FromJsonToDictionary(this string json)
    
        string[] keyValueArray = json.Replace("", string.Empty).Replace("", string.Empty).Replace("\"", string.Empty).Split(',');
        return keyValueArray.ToDictionary(item => item.Split(':')[0], item => item.Split(':')[1]);
    

以下是您之后的使用方法。

    class Program
    
        static void Main(string[] args)
        
            Dictionary<string, string> dictss = new Dictionary<string, string>();

            dictss.Add("onekey", "oneval");
            dictss.Add("twokey", "twoval");
            dictss.Add("threekey", "threeval");
            dictss.Add("fourkey", "fourval");
            dictss.Add("fivekey", "fiveval");

            string jsonString = dictss.FromDictionaryToJson(); //call extension method

            Console.WriteLine(jsonString);

            Dictionary<string, string> dictss2 = jsonString.FromJsonToDictionary(); //call extension method

            foreach(KeyValuePair<string,string> kv in dictss2)
                Console.WriteLine(string.Format("key=0,value=1", kv.Key, kv.Value));
        
    

或者使用普通函数

        public string FromDictionaryToJson(Dictionary<string, string> dictionary)
        
            var kvs = dictionary.Select(kvp => string.Format("\"0\":\"1\"", kvp.Key, string.Join(",", kvp.Value)));
            return string.Concat("", string.Join(",", kvs), "");
        

        public Dictionary<string, string> FromJsonToDictionary(string json)
        
            string[] keyValueArray = json.Replace("", string.Empty).Replace("", string.Empty).Replace("\"", string.Empty).Split(',');
            return keyValueArray.ToDictionary(item => item.Split(':')[0], item => item.Split(':')[1]);
        

【讨论】：

不应该是var kvs = dictionary.Select(kvp => string.Format("\"0\":\"1\"", kvp.Key, kvp.Value));吗？否则所有值都以逗号开头...

在FromJsonToDictionary 中，你可以通过keyValueArray.Select(t => t.Split(':')).ToDictionary(item => item[0], item => item[1]) 避免两次split(':')

你应该在你做 string.Join("," ...